Grain-drill.



No. 737,152. PATENTBD AUG. 25, 1903.

D. B. SALTSMAN.

GRAIN DRILL.

APPLIUATION FILED.A.PR.16. 1903.

I0 MODEL.

s mum mi Noms Pnzns ce. PHoToLrrHQ. WASHINGTON. n, c.

iatented August 25,A .1903.

PATENT OFFICE.

DAVID B. SALTSMAN, OF DOWAGIAC,

MICHIGAN, gAsslcnon To DowAcIAc MANUFACTURING COMPANY, OF DOWAGIAC, MICHIGAN.

GRAIN-DRILL.

SPECIFICATION forming part of Letters -Patent No. 737,152, dated August 25, 1903.

Application tiled April 16, 1903.

This invention relates to improvements in.

grain-drills.

It relates particularly to improvements in disk furrow-openers for grain-drills, although Athe structure is adapted for use in other relations.

The objects of this invention are', first, to provide an improved disk furrow opener which is simple and compact in its structure; second, to provide an improved disk furrowopener in which the bearings are so arranged that the strain thereon and the consequent wear are reduced to a minimum.

Further objects and objects relating to structural details will definitely appear in the detailed description to follow.

f I accomplish the objects of my invention by the devices and means described in th followingspecication.

The invention is clearly deined,andpoint ed out in the claims.

A structure embodying the features of'my invention is clearly illustrated in the accompanying drawings,formiug a part of this speci- Y iication, in which- Figure 1 is a detail side elevation view of a structure embodying the features of my invention. Fig. 2 is an enlarged detail sectional view taken on a line corresponding to line 2 2 of Fig. l. Fig. 3 is an enlarged detail side elevation View of the boot, showing the arrangement thereof for supporting the disks.

In the drawings the sectional Views are taken looking in the direction of the little arrows at the ends of the section-lines, and similar letters of j reference refer to similar parts throughout the several views.

Referring to the lettered parts of the drawings, the boot A is of the usual or any'de-r sired construction and is provided with a bracket, to which the draw-bar A" is attached. Toward the lower end of the boot is a bracket or projection A', which is adapted to receive Serial No. 152,921. (No model.)

the bearing-blocks C, which are secured thereto by a bolt D. The bearing-blocks are provided with an annular iiange or disk-like head c.

The disks B are provided with a central opening and are mounted upon the bearingblocks C, contacting with the inner face thereof. `Secured to the outer faces of the disks B are bearing-plates B', which are adapted to fit over the annular `flange or disk-like head cof the` bearing-blocks. The bearingplates B' are provided with threaded openings to receive the threaded dust-caps b, so that the bearing is thoroughly protected. Oil may be introduced into the bearings in any convenient or usual manner, the means not f being here illustrated. By this arrangement of the parts a very compact bearing is produced and the disks are supported in a manner that the strain thereon is reduced to a minimum. The bearing is thoroughly protected from dirt and dust and is very durable. Itis simple and economical to produce and convenient to assemble. The bearing-surface is comparatively wide and the bearing thin, v

'sothat there is nouudue strain upon the disks. i Y Y Although I` have illustrated and described my-inventionV as adapted to furrow-openers for grain-drills, it is evident that it is adaptedv for use in other relations. I have illustrated and described 'the same in the form preferred by me onaccount'of its simplicity and durability. I am aware, however, that it is capable of considerable structural variation" without departing from my invention.

Having thus described my invention, what IOO bracing said bearing-head secured to said disk; and dust-caps secured to said bearingplates.

3. The combination of a boot; a bearingblock having a disk-like head ou its outer ends secured thereto; a furrow-opening disk on said bearing-block; a bearing-plate einbracing said bearing-head secured to said disk.

4. A bearing-block having a disk-like head 

